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Forum: Pentax SLR Lens Discussion
01-18-2017, 05:15 PM
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Forum: Pentax SLR Lens Discussion
01-18-2017, 05:09 PM
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by 'catches' do you mean it feels a bit rough in one direction sometimes?
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Forum: Pentax SLR Lens Discussion
01-18-2017, 04:26 PM
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The focus was on the center of the frame, but I was not sure if it was focused to infinity for the f8 shot or not. Since the car in the center of the frame was more than 5ft away I would assume it was at infinity but I am not sure.
I also had one other quick question I wanted to ask. When manually focusing form close to infinity with the copy of the lens I was testing there seemed to be a slight resistance (almost as if something was resisting the focus action). When focusing from infinity to close the focus felt smoother but not so much in the other direction. Is this normal? I thought that it might be the quick shift focusing system, but as this is my first limited I wasn't sure and the sales man couldn't confirm this was an issue or not.
I really appreciate all your feedback!
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Forum: Pentax SLR Lens Discussion
01-17-2017, 08:54 PM
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I will definitely have to look at Tim Ashley's site, thank you for the reference. I figured there was some field curvature, but I just wasn't sure.
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Forum: Pentax SLR Lens Discussion
01-17-2017, 08:03 PM
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Here is F8 (1/50, ISO 200) at the edge, so as you can see from image 1, it actually looks better at f4.
Attachment 340134[COLOR="Silver"]
---------- Post added 01-17-2017 at 10:03 PM ----------
---------- Post added 01-17-2017 at 10:17 PM ----------
To the left of the Boston Pizza, right at the edge of the frame there is a Starbucks and in the F8 image I can barley make out the Starbucks sign (kinda like a long blob), but in my F4 and F5.6 image they are significantly clearer.
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Forum: Pentax SLR Lens Discussion
01-17-2017, 07:54 PM
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Good evening Pentaxians,
I am considering the purchase of a used copy of the subject lens, but after comparing images to my Tamron 17-50 f2.8 at similar apertures I am at a bit of a loss. The resulting images that I was getting from the Pentax seemed all over the place (soft in the center and sharp on the edge then vice versa) and this may have been a result of the focus, but I am not sure.
The following images (100% Crop) were both taken from the same spot at 1/60 sec, f4 - ISO 100. Hand held with K3. There may have been a slight adjustment in focus as the results seem quite different.
Image 1 Center
Attachment 340127
Image 1 Edge
Attachment 340129
Image 2 Center
Attachment 340128
Image 2 Edge
Attachment 340130
The details in the foreground car tire are very good in image 2, but the edge of image 2 is fairly soft. Vice versa for image 1 as the details in the tire are less but the edges are fairly sharp for the lens being wide open. I also found the images of the Tamron to be over all sharper, but of course its not quite as wide and its bigger and heaver and is not quite as elegant!
Because of these results I am not sure if its worth while to purchase the limited lens or just stick with the Tamron for use as my main landscape lens. It seems that this lens is praised by so many, but I really couldn't take it out of the store in order to test it better, so I am not sure what to do.
Can anyone help me decide please!
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Forum: Monthly Photo Contests
03-19-2016, 07:58 PM
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Forum: Pentax SLR Lens Discussion
02-27-2015, 07:13 PM
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Thanks everyone for providing really good advise which helped me make my decision, which was to walk away form this one, but keep my eye open as I am still very much attracted to this particular lens. For now I am just going to enjoy shooting with what I have and start saving for the FF and maybe one day I will come across a really clean copy. And thank you pinholecam I really like the images you provided, I actually stumbled across the bottom two while searching for info on this lens and I thought they were pretty awesome.
Thanks again everyone and happy shooting
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Forum: Pentax SLR Lens Discussion
02-24-2015, 10:22 AM
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Good day my fellow Pentaxians,
Can you please help me make a decision regarding the purchase of a Pentax-M 20mm f4 which is being sold locally for a total of $310 CAN. The lens is in decent codition with some minor scuffs and paint loss. The elements apear to be clear (No fungus, coatings seem good, typical dust particles, no haze). The aperture blades seem to be shinny around the outer edges and I have been told by the person selling the lens that it is not oil but wear from use. The focus is smooth and the aperture ring is a bit loose, but functions as it is suppose to.
Most of my lenses are older and will hopefully fit a FF Pentax if it's ever produced (been waiting for years like others), with my only croped lens being the Tamron 17-50 f2.8. The Tamron is also the widest lens that I own and my second widest is the Pentax-A 35-105mm f3.5, so if I can actually afford the Pentex FF the widest lens that will fit the FF circle will be 35mm.
I really want to start getting into street photography and I love taking landscapes, so the light weight and size of this 20mm lens is very attractive for both. The biggest thing that is bugging me right now is that if I let it go will I ever get a chance to buy another one.
My decision is also hinging on the Pentax FF which may be a bad thing because it dosen't yet exist. There is also the Pentax-M 28 f2.8 which I am looking at because it is pretty much the same size and weight just not as wide.
Please help me!!!!! :o
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Forum: Pentax K-3 Photo Contest
06-09-2014, 07:51 PM
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Growing up I spent so many weekends there. Not sure what it is but I love this little town.
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Forum: Pentax K-3 Photo Contest
06-03-2014, 06:28 AM
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Is this the lighthouse in Grand Marais?
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Forum: Sold Items
02-19-2013, 05:47 AM
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I had this lens for years and it produced some of my best images. Unfortunately it fell apart, so I traded it in for the DFA 100mm WR Macro which is also a very nice lens, but I miss this so much and if I have the extra cash I would pick it up in a heartbeat.
Amazing lens,
Cheers.
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Forum: Product Suggestions and Feedback
11-01-2012, 06:34 PM
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How about an old school looking full frame model, that is my dream. I know, I know its shown with an APC lens mounted on it. :D
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Forum: Pentax SLR Lens Discussion
10-16-2012, 01:13 PM
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I have decided to go with the 100mm DFA macro, thanks for your help guys. Hopefully I made the right decision, I will know shortly.
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Forum: Pentax SLR Lens Discussion
10-09-2012, 07:07 PM
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I think you guys are right, time for a new 100mm WR
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Forum: Pentax SLR Lens Discussion
10-09-2012, 03:19 PM
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I currently have an opportunity to trade my FA 50mm macro (excellent mechanically, cracked distance scale window) for a new DFA 100mm macro WR + $60 and was wondering if it was worth it or if I should just keep my FA 50. What should I do, please help me decided? :confused:
For info I also have my a mint SMC Takumar 100mm F4 macro, so another 100mm macro might be overkill, but I really like the idea of having a WR lens for my K5 because I really like to take images of water droplets after rain storms.
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Forum: Sold Items
11-18-2010, 01:12 PM
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Man would I ever love this lens. Good luck with the sale.
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Forum: Sold Items
07-22-2010, 07:12 AM
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I see that you have quite good feedback so I feel pretty confident with a transaction. Is there any canse to buy the lens befor the guy from the west coast? I really want this lense.
---------- Post added 07-22-10 at 10:13 AM ----------
I can do the email money transfer.
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Forum: Sold Items
07-22-2010, 06:37 AM
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I really want to buy the 55-300 and I will do the email money transfer thing. Can you please give me your information.
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Forum: Sold Items
07-22-2010, 06:20 AM
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I am just worried about not getting what I paid for. I feel like it would be so easy to get ripped off.
---------- Post added 07-22-10 at 09:21 AM ----------
Who and what is a Mack Warranty?
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Forum: Sold Items
07-22-2010, 05:13 AM
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I am interested in the 55-300, would you happen to know anyone in the Ottawa area that you could send this to so that I could pick it up in person?
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